Home / 20,775.45-31,163.22-11,560.89

Finding the Fourth Proportional to 20,775.45, 31,163.22 and 11,560.89

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Solution

The fourth proportional to 20,775.45, 31,163.22 and 11,560.89 is: 17,341.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.45 : 31,163.22 = 11,560.89 : x
  2. Step 2: Convert to fraction form
    20,775.45/31,163.22 = 11,560.89/x
  3. Step 3: Cross multiply
    20,775.45x = 31,163.22 × 11,560.89
  4. Step 4: Simplify right side
    20,775.45x = 360,274,558.47
  5. Step 5: Solve for x
    x = 360,274,558.47/20,775.45
  6. Step 6: Final answer
    x = 17,341.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.